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# Specification Quality Checklist - API-Level Response Summarization **Feature**: `009-add-api-level` **Validation Date**: 2025-10-29 **Status**: ✅ PASSED --- ## Quality Criteria ### 1. No Implementation Details **Criteria**: Spec describes WHAT and WHY, not HOW. No code, frameworks, or specific implementation mentioned. - ✅ **PASS**: Spec focuses on behavior and outcomes - ✅ No specific frameworks mentioned (FastAPI, Pydantic, etc.) - ✅ No code examples or implementation suggestions - ✅ Requirements are technology-agnostic - ✅ Uses behavioral language ("System MUST accept", "System MUST return") **Evidence**: - FR-001: "System MUST accept a 'summary' query parameter" (not "Add @query_param decorator") - FR-003: "System MUST return only essential fields" (not "Create Pydantic model with fields X, Y, Z") - SC-001: "80-90% smaller" (not "Use field projection utility") --- ### 2. Functional Requirements Testable **Criteria**: Each FR can be verified with objective pass/fail tests. - ✅ **PASS**: All 9 functional requirements are testable **Test Mappings**: - **FR-001**: Test with GET /api/listings?summary=true → Verify parameter accepted - **FR-002**: Test with summary=invalid → Verify returns full response (falsy handling) - **FR-003**: Test response schema → Verify only essential fields present - **FR-004**: Test without summary parameter → Verify full response structure unchanged - **FR-005**: Test response contains "note" field → Verify presence and content - **FR-006**: Test pagination metadata → Verify total, limit, offset present - **FR-007**: Test GET /api/listings/123?summary=true → Verify warning or ignore behavior - **FR-008**: Test "total" field → Verify count matches item count - **FR-009**: Test error scenarios → Verify same HTTP status codes and error handling --- ### 3. Success Criteria Measurable **Criteria**: SCs have clear, objective, quantifiable metrics. - ✅ **PASS**: All 5 success criteria are measurable **Measurement Methods**: - **SC-001**: Calculate byte size ratio: `(full_size - summary_size) / full_size * 100` → Verify ≥80% - **SC-002**: Measure API response time with `time.time()` → Verify <1 second - **SC-003**: Run full test suite without summary parameter → Verify 100% pass rate - **SC-004**: Test with 20 properties in Claude Desktop → Verify no context overflow error - **SC-005**: Count support tickets related to summary parameter → Verify ≥90% reduction --- ### 4. No [NEEDS CLARIFICATION] Markers **Criteria**: No unresolved questions or ambiguities in spec. - ✅ **PASS**: No [NEEDS CLARIFICATION] markers found - ✅ Edge cases explicitly addressed (section exists) - ✅ Assumptions documented clearly - ✅ Out of scope clearly defined **Edge Cases Covered**: - Summary on detail endpoints (GET /api/listings/{id}?summary=true) - Invalid summary parameter values - Null/missing fields in source data - Pagination metadata handling --- ### 5. User Stories Independent and Prioritized **Criteria**: Each story delivers standalone value, priority justified with "Why this priority" rationale. - ✅ **PASS**: 3 user stories, all properly prioritized **Priority Justification**: - **US1 (P1)**: "Most common use case causing context overflow" - Addresses immediate pain point - **US2 (P1)**: "Equally critical as property summarization" - Parallel importance for booking data - **US3 (P2)**: "Improves developer experience" - Nice to have, not blocking core functionality **Independence Verification**: - ✅ US1 can be tested independently (property endpoint only) - ✅ US2 can be tested independently (booking endpoint only) - ✅ US3 can be tested independently (check "note" field presence) --- ### 6. Acceptance Scenarios Complete **Criteria**: Given/When/Then format, covers happy path + edge cases. - ✅ **PASS**: 7 acceptance scenarios across 3 user stories **Coverage**: - **Happy Path**: US1-AS1 (summary=true), US2-AS1 (summary=true) - **Backward Compatibility**: US1-AS2 (no parameter), US2-AS3 (full details) - **Performance**: US1-AS3 (response size verification) - **Data Filtering**: US2-AS2 (nested objects excluded) - **Developer Guidance**: US3-AS1, US3-AS2 (note field presence) --- ### 7. Technology-Agnostic Language **Criteria**: No mentions of specific tools, libraries, or implementation patterns. - ✅ **PASS**: Spec uses neutral terminology **Terminology Review**: - ✅ "System MUST" instead of "FastAPI route handler must" - ✅ "API consumer" instead of "MCP client" or "Claude Desktop" - ✅ "Essential fields" instead of "Pydantic model with exclude fields" - ✅ "Summarized response" instead of "FieldProjector utility output" --- ### 8. Success Criteria Aligned with Requirements **Criteria**: Each SC maps to one or more FRs. - ✅ **PASS**: All SCs trace to FRs **Traceability Matrix**: - **SC-001** (80-90% size reduction) → **FR-003** (return only essential fields) - **SC-002** (<1 second response) → **FR-001, FR-003** (summarization performance) - **SC-003** (100% backward compat) → **FR-004** (preserve full response when absent) - **SC-004** (20+ properties no overflow) → **FR-003, FR-008** (compact format + total count) - **SC-005** (API docs clarity) → **FR-005** (note field with guidance) --- ### 9. Assumptions Documented **Criteria**: External dependencies and constraints clearly stated. - ✅ **PASS**: 5 assumptions documented **Assumptions Review**: 1. ✅ Consumers will make separate detail requests (dependency on existing API behavior) 2. ✅ TokenAwareMiddleware remains in place (system constraint) 3. ✅ AI queries involve browsing before drilling (user behavior assumption) 4. ✅ Essential fields are sufficient (data completeness assumption) 5. ✅ 80-90% reduction prevents overflow (performance assumption) --- ### 10. Out of Scope Clearly Defined **Criteria**: Explicitly states what will NOT be implemented. - ✅ **PASS**: 5 items explicitly out of scope **Out of Scope Items**: 1. ✅ Automatic AI consumer detection 2. ✅ Custom field selection (fields=id,name,city) 3. ✅ Summarization of detail endpoints 4. ✅ Server-side rendering / HTML responses 5. ✅ Rate limit changes based on response size --- ## Validation Summary **Total Criteria**: 10 **Passed**: 10 **Failed**: 0 **Overall Status**: ✅ **SPECIFICATION READY FOR NEXT PHASE** --- ## Recommendations 1. **Proceed to `/speckit.clarify`**: Ask 3-5 targeted clarification questions to refine edge cases and assumptions. - Example: "Should summary=true on detail endpoints (GET /api/listings/123) return a warning or silently ignore?" - Example: "What's the expected behavior when a summarized field is null in the source data?" 2. **Proceed to `/speckit.plan`**: Generate implementation plan with task breakdown. 3. **No Changes Required**: Spec meets all quality criteria and is ready for planning phase. --- ## Notes - Spec demonstrates excellent separation of concerns (what vs. how) - User stories are well-prioritized with clear justification - Edge cases are thoughtfully addressed - Success criteria are objective and measurable - No ambiguities or unresolved questions detected **Validator**: Claude Code **Date**: 2025-10-29